gffranco c83a7fe94b ci: upgrade artifact actions to v4 ...

- upload-artifact@v3 -> v4 (removed deprecated retention-days)
- download-artifact@v3 -> v4 with merge-multiple: true
- This flattens artifacts into the download path, simplifying the
  find/upload loop that uploads assets to Gitea

2026-06-03 20:14:12 -03:00

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workflows

ci: upgrade artifact actions to v4

2026-06-03 20:14:12 -03:00